Ink jet printer with conveying belts

Abstract

An ink jet printer for discharging ink drips to a printing medium mounted on a conveying belt and conveyed from a plurality of nozzles, in which the printing quality is improved and the printed speed is raised. A printing medium conveying section has first and second conveying portions connected in the conveying direction of the printing medium and a plurality of conveying belts are arranged by mutually keeping a predetermined interval, in which the conveying belts of the first and second conveying portions are set so that an other-hand conveying belt is located between one-hand conveying belts, and a printing head is constituted of first head set to a position facing the gap between the conveying belts of the first conveying portion and a second head set to a position facing the gap between the conveying belts of the second conveying portion.

1. An ink jet printer comprising: a printing medium conveying section for conveying a printing medium by mounting it on a conveying belt; and a printing head set by facing a printing face, which is a face opposite side to the conveying face of the printing medium conveyed by the printing medium conveying section, and arranging a plurality of nozzles for discharging ink drips in the direction intersecting with the conveying direction of the printing medium;
 wherein the printing medium conveying section has a first and a second conveying portions connected in the conveying direction of the printing medium and having a plurality of conveying belts by mutually keeping a predetermined interval, and the conveying belts of the first and second conveying portions are arranged so that an other-hand conveying belt is located between one-hand conveying belts; and 
 wherein either of the first and second conveying portions is set to the number of conveying belts one more than the number of conveying belts of the other and the conveying belts of the first and second conveying portions are alternately arranged centering around the central conveying belt of a conveying portion having an odd number of the conveying belts among the first and second conveying portions. 
 
   
   
     2. The ink jet printer according to  claim 1 , wherein in the case of the first and second conveying portions, the conveying belts are applied between a driving shaft and a driven shaft set in parallel with the driving shaft. 
   
   
     3. The ink jet printer according to  claim 1 , wherein in the case of the first and second conveying portions, the conveying belts are applied between a common driving shaft set between the first and second conveying portions and first and second driven shafts set in parallel with the common driving shaft.